I have my music files on a Passport external hard drive connected via firewire. All has been working fine with a 2009 Mac Mini running Audirvana plus and iTunes. I happened to empty the trash bin last night. I was not paying that much attention before I realized it was deleting 4000 files. When I went to check the hard drive, all of my individuals album folders were there, but the tracks were gone. All that remained in each folder was a log file.
Fortunately, I had a backup on another hard drive, so it was no big deal to copy the music folder back over to the Passport.
What is weird is that, now, as soon as I plug in the hard drive, the music folder ends up in the trash AND iTunes thinks that is where it has to look for the files. If I go to the advanced settings and point iTunes to the hard drive, it cannot locate the files. FWIW, the iTunes library is intact. Also, if I eject the drive, the trash bin empties, too. What is going on???